Paul Walkers death was a tragic loss for the entire world. He was from what I have read an incredible person. Unfortunately people react differently than others to loss. Many have problems accepting loss as well.
He was a highly visible person who cared about people and did all he could to help others in need. Because of his high profile, some people would perfer to think hoax, or fraud, or anything other than dealing with the loss at hand.
As far as I can see, no one has suffered more over this loss than his immediate family and friends and out of respect for them and their loss... everyone should just back off and let him rest in peace.